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Dla członkiń zespołu tanecznego planowano kupić jednakowe spódnice po 60 zł każda.

Gdy sprzedawca obniżył cenę tych spódnic o 20%, wówczas za tę samą kwotę można było kupić o 5 spódnic więcej. Ile można było kupić spódnic po obniżonej cenie?

User JGoodgive
by
6.0k points

1 Answer

1 vote

Answer:

25

Explanation:

Let's say x is the number of skirts, and C is the cost. At 60 zł per skirt, the cost is:

C = 60x

When the price is reduced by 20%, the price of each skirt becomes 0.80 (60 zł) = 48 zł. At this new price, the team can buy x+5 skirts at the same cost.

C = 48(x + 5)

Setting the expressions equal and solving for x:

60x = 48(x + 5)

60x = 48x + 240

12x = 240

x = 20

The team could buy 20 skirts at the original price, which means they can buy 25 skirts at the reduced price.

User James Sulak
by
6.6k points
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